Torstenson War

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Torstenson War
Part of the
Danish Straits, Jutland
)
Baltic Sea and North Sea
Result Swedish victory
Territorial
changes
Sweden
for a period of 30 years as a guarantee
Belligerents Swedish Empire Denmark–Norway
Supported by:
 Holy Roman Empire[1]Commanders and leaders
Lennart Torstenson
Mårten Anckarhielm
Christian IV
Hannibal Sehested
Anders Bille
Ebbe Ulfeldt
Holy Roman Empire Matthias GallasStrength 24,600 32,000

The Torstenson War

Lennart Torstenson
.

Denmark had withdrawn from the Thirty Years' War in the 1629 Treaty of Lübeck. After its victories in the war, Sweden felt it had to attack Denmark-Norway due to its advantageous geographical position in relation to Sweden. Sweden invaded in a short two-year war. In the Second Treaty of Brömsebro (1645), which concluded the war, Denmark-Norway had to make huge territorial concessions and exempt Sweden from the Sound Dues, de facto acknowledging the end of the Danish dominium maris baltici. Danish efforts to reverse this result in the Second Northern, Scanian and Great Northern wars failed.

Background

Sweden had been highly successful in the Thirty Years' War, having defeated Imperial armies in Germany and seen substantial victories under Gustavus Adolphus and after his death, under the leadership of Count Axel Oxenstierna, Lord High Chancellor of Sweden. At the same time, Sweden was continually threatened by Denmark–Norway, which almost completely encircled Sweden from the south (Blekinge, Scania and Halland), the west (Bohuslän) and the north-west (Jämtland and Härjedalen). The Danish Sound Dues were also a continuing source of irritation and a contributing factor to the war. In the spring of 1643 the Swedish Privy Council determined that their military strength made territorial gains at the expense of Denmark-Norway likely. The Count drew up the plan for war and directed a surprise multi-front attack on Denmark in May.

Prelude

Swedish Field Marshal Lennart Torstensson was ordered to march against Denmark. Proceeding from Moravia, his forces entered Danish territory in Holstein on 12 December and by the end of January 1644 the Jutland peninsula was in his possession. In February 1644, the Swedish General Gustav Horn with an army of 11,000 men occupied much of the Danish provinces of Halland and Scania, except for the fortress town of Malmø.

War

Denmark

This attack caught Denmark-Norway unaware and poorly prepared but King

Battle of Fehmarn on 13 October 1644 against the Swedish fleet, including leased Dutch ships under Mårten Anckarhielm
(previously Maerten Thijssen). He also counted on the forces of Norway to relieve the pressures on Danish provinces in Scania by attacking Sweden along the Norwegian–Swedish border.

Norway

Norway, governed by Christian's son-in-law,

Østerdal
before being driven back.

Sehested had made preparations to advance with his own army and a similar army under

Henrik Bjelke into Swedish Värmland but was ordered to relieve the King in the Danish attack on Gothenburg. When Sehested arrived the King joined his fleet and performed heroically, even though wounded, preventing Torstensson's army from moving onto the Danish islands. On the Norwegian front, Sehested attacked and destroyed the new Swedish city of Vänersborg. He also sent Norwegian troops under the command of George von Reichwein across the border from Vinger and Eidskog and troops under Henrik Bjelke into Swedish Dalsland
.

Aftermath

The Treaty of Brömsebro in 1645. Brown: Denmark–Norway; Green: Sweden; Yellow: the provinces of Jämtland, Härjedalen, Idre & Särna and the Baltic Sea islands of Gotland and Ösel, which were ceded to Sweden; Red: the province of Halland, ceded for 30 years

Christian's Danish forces were so exhausted that he was forced to accept the mediation of France and the United Provinces in suing for peace. The

Valdemar Atterdag of Denmark had conquered the island from Sweden in 1361) in the center of the Baltic and Øsel in the Baltic Sea. In Dalarna the landshövding (chief of the land i.e. governor) raised a host of 200 dalecarlian farmers who seized the region of Särna
, making it de facto Swedish territory. Sweden occupied the Danish province of
Denmark-Norway, Frederick II, Administrator of the Prince-Bishopric of Verden (1634–1645) and of the Prince-Archbishopric of Bremen (1635–1645), had to resign, with the two prince-bishoprics being occupied by the Swedes. According to the Peace of Westphalia both prince-bishoprics became a fief of the Holy Roman Empire
to the Swedish crown in 1648.

Later events

The siege of Brno in 1645, by Swedish and Transylvanian forces led by Torstenson

The defeat of Denmark-Norway reversed the historic balance of power in the Baltic. Sweden gained domination of the Baltic, unrestricted access to the North Sea and was no longer encircled by Denmark–Norway. The surprise attack assured that Denmark–Norway now looked for an opportunity to recoup their losses, while Sweden looked for opportunities to expand further, setting the stage for continued conflict on the Baltic over the next century. With Denmark–Norway out of the war, Torstenson then pursued the Imperial army under Gallas from Jutland in Denmark south to Bohemia. At the Battle of Jankau near Prague, the Swedish army defeated the Imperial army under Gallas and could occupy Bohemian lands and threaten Prague, as well as Vienna.

Footnotes

  1. ^ also known as the Hannibal controversy or Hannibal War (Norwegian: Hannibalfeiden) after Norwegian governor-general Hannibal Sehested

References

Sources